1. Ross Macdonald, J., (Ed.), Impedance Spectroscopy. John Wiley & Sons, New York, 1987.
2. Jonscher, A. K., Dielectric Relaxation in Solids. Chelsea Dielectrics Press, London, 1983.
3. Xu, Y., Ferroelectric Materials and their Applications. Elsevier Science B.V., Amsterdam, 1991.
4. Calderón, F., Pérez, O., Leccabue, F. and Watts, B. E., Influence of the poling field on the electromechanical coupling of the PZT ceramic doped with La2O3. In Proceeding Eighth CIMTEC World Ceramic Congress, Ceramics: Charting the Future, ed. P. Vincenzini, 28 June 1994, Florence, Italy. Techna Srl, 1995, pp. 2499–2504.
5. Properties of grain-oriented of ternary system based on lead titanate zirconate ceramics;Calderón;High Temperatures, High Pressures,1998